isn,t there some way to do it with electricity,safely!
You can't do it permanently, as the substance will react in the future to other existing magnetic fields. However, a powerful electro-magnet would magnetize it. to what degree it stays magnetized is a factor of the fields it encounters in the future,, and therefore cannot be determined. steel isn't a permanent magnetizable material.
Take the sheet and and roll it with paper between it .Then take a long copper wire without the plastic covering and round it along the entire sheet evenly in one direction( clock or anticlockwise direction).wound it a number of times till it becomes a big coil.Then connect the end you started from (if clockwise ) to the +ve terminal of a D.C power supply(if anticlockwise then follow the reverse) and obviously the other end to the -ve.(remember directions).After completing the circuit let the current of high voltage (10-15 volts) pass through the coil for a few hours.If everything done properly you end up having a very strong permanent magnet.
